PRETZ: FLORA OF LEHIGH COUNTY, PENNSYLVANIA 63 
DrvyoptTerts Bootti (Tuckerm.) Underw. 
D. cristata X intermedia Dowell 
One-fourth mile south of Saegersville, July 7, 1907, 535. In 
bog and along streamlet 174 miles southwest of Mountainville, 
August 3, 1907, 704. Near Waldheim, 44 mile southwest of Moun- 
tainville, October 16, 1909, 2287. General vicinity of bog 1 mile 
south by southwest of Mountainville, November 12, 1910, 3107. 
Along streamlet 34 mile east of Shimersville, November 13, 1910. 
3128. Vicinity of streamlet 1%g miles southeast of Emaus, 
November 13, 1910, 3734. 
Approaching anything like abundance in only a limited boggy 
area near Saegersville, the only station noted in the county outside 
of the vicinity of the South Mountains. Not rare, neither inclined 
to abundance at the other stations, which would indicate that this 
species is to be expected in bogs on the South Mountains and 
elsewhere in association with the other related members of the 
Dryopteris group. Fronds9.1 dm. (2.7+6.4) long and 1.5 dm. wide 
represent maximum luxuriance. Collected with ripe fruit on 
June 28. Sterile fronds evergreen, the fertile lasting well into 
winter. Variable. 
DRYOPTERIS CRISTATA (L.) A. Gray 
Lehigh Mountain along Lehigh River, 2 miles southwest of 
Bethlehem, September 1878, E.A.Rau. Streamlet above Moun- 
tainville, August 8, 1900, Dowell 903. Third streamlet 13 miles 
east northeast of Mountainville, September 15, 1900, Hamm. 
Bog \% mile south of Saegersville, July 7, 1907, 536. Bog and 
streamlet 174 miles southwest of Mountainville, July 13, 1907, 
615a. Bog west of Trexlertown, November 14, 1908. Near 
Waldheim, 14 mile southwest of Mountainville, October 16, 1909. 
Vicinity of woods and creek 13¢ miles southwest of Locust Valley, 
July 17, 1910, 2667. Vicinity of bog 14 miles east by northeast 
of Mountainville, October 1910, H. D. Bailey. Vicinity of mine 
holes 14 mile northeast of Lanark, November 5, 1910, 3074. 
114 miles south of Schnecksville, November 6, 1910, 3076. 14 
miles south by southeast of Mountainville, November 12, 1910, 
3104. Bog and streamlet 1 mile south by southwest of Moun- 
tainville, November 12, 1910, 3108; farther west, 3709. Roadside, 
